Get a free home demo of LearnNext

Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back

clear
searchtune
What people are asking?

Asked by Ravinder Ghanghas

Mar 9, 2014

periodic table 1 to 30 plz give me with atmoic no. mass valency neutron proton and electronic configrution

sir these are given in book i want 21 to 30

Answer (2)

Asked by Adithyan Sanal

Nov 26, 2014

WHAT IS THE POSTULATES OF RUTHERFORD'S ATOMIC THEORY?


Postulates of Rutherford nuclear model:
  • Positive charge is concentrated in the center of the atom, called nucleus.
  • Electrons revolve around the nucleus in ...

Answer (1)

Asked by Kanishka Tayal

Feb 28, 2014

urgent

Ans:
 

Ans:  

According to JJ Thomson’s atomic model.
  • An atom is a positively charg...

Answer (1)

Asked by Jaya

Nov 15, 2013

what are isotopes and isobars ? with examples and in simple Language 

Ans:  Isotopes: The atoms which posses same atomic number (the atoms same element) but different mass number are called Isotopes.
Ex:

Answer (2)

Asked by Archit Chauhan

Jan 23, 2015

What is covalency and electrovalency?

Ans: Covalency: The number of electrons that an atom can shared to get ...

Answer (1)

Asked by Prashoon Chandrakar

Feb 19, 2015

Examples of  isotopes and isobars.

Examples of Isotopes:
Isotopes of Hydrogen- Hydrogen – 1, Hydrogen – 2, Hydrogen - 3

Isotopes of Oxygen – Oxygen -16, Oxygen -17, Oxygen -18

Isotopes of Carbon &#...

Answer (1)

Limitations of Rutherford model, Bohr model,Thomson model.

Ans:
Draw backs of 

Answer (1)

Asked by Harleen Kaur

Feb 23, 2014

pls answer fst

As because gold is very highly malleable then other if any other metal sheet is used the experiment is quite succesful

Answer (6)

Asked by Aanya

Feb 4, 2015

How to learn the atomic mass and valencies of elements easily?

For your grade you need to remember atomic masses of first 20 elements.

Answer (1)

Asked by Anusha

Dec 25, 2013

which is the element having 8protons, 8 neutrons&8 electrons?

oxygen

Answer (2)

Filters